Able to set SSH port when install, update Docker docs

conf/locale/locale_en-US.ini

@@ -76,6 +76,8 @@ run_user = Run User
 run_user_helper = The user must have access to Repository Root Path and run Gogs.
 domain = Domain
 domain_helper = This affects SSH clone URLs.
+ssh_port = SSH Port
+ssh_port_helper = Port number which your SSH server is using, leave it empty to disable SSH feature.
 http_port = HTTP Port
 http_port_helper = Port number which application will listen on.
 app_url = Application URL

docker/README.md

@@ -35,21 +35,19 @@ Directory `/var/gogs` keeps Git repoistories and Gogs data:
         |-- log
         |-- templates
 
-## SSH Support
+## Settings
 
-In order to support SSH, You need to change `SSH_PORT` in `/var/gogs/gogs/conf/app.ini`:
+Most of settings are obvious and easy to understand, but there are some settings can be confusing by running Gogs inside Docker:
 
-```
+- Repository Root Path: keep it as default value `/home/git/gogs-repositories` because `start.sh` already made a symbolic link for you.
-[server]
+- Run User: keep it as default value `git` because `start.sh` already setup a user with name `git`.
-SSH_PORT = 10022
+- Domain: fill in with Docker container IP(e.g. `192.168.99.100`).
-```
+- SSH Port: Use the exposed port from Docker container. For example, your SSH server listens on `22` inside Docker, but you expose it by `10022:22`, then use `10022` for this value.
+- HTTP Port: Use the exposed port from Docker container. For example, your Gogs listens on `3000` inside Docker, but you expose it by `10080:3000`, then use `10080` for this value.
+- Application URL: Use combination of **Domain** and **HTTP Port** values(e.g. `http://192.168.99.100:10080/`). 
 
 Full documentation of settings can be found [here](http://gogs.io/docs/advanced/configuration_cheat_sheet.html).
 
-## Todo
-
-Install page need support set `SSH_PORT`.
-
 ## Troubleshooting
 
 If you see the following error:

modules/auth/user_form.go

@@ -24,6 +24,7 @@ type InstallForm struct {
 	RepoRootPath string `binding:"Required"`
 	RunUser      string `binding:"Required"`
 	Domain       string `binding:"Required"`
+	SSHPort      int
 	HTTPPort     string `binding:"Required"`
 	AppUrl       string `binding:"Required"`
 

public/less/_install.less

@@ -2,9 +2,10 @@
 	padding-top: 45px;
 	padding-bottom: @footer-margin * 3;
 	form {
+		@input-padding: 320px !important;
 		label {
 			text-align: right;
-			width: 40% !important;
+			width: @input-padding;
 		}
 		input {
 			width: 35% !important;
@@ -12,7 +13,7 @@
 		.field {
 			text-align: left;
 			.help {
-				margin-left: 41%;
+				margin-left: @input-padding+15px;
 			}
 			&.optional .title {
 				margin-left: 38%;

routers/install.go

@@ -118,6 +118,7 @@ func Install(ctx *middleware.Context) {
 	}
 
 	form.Domain = setting.Domain
+	form.SSHPort = setting.SSHPort
 	form.HTTPPort = setting.HttpPort
 	form.AppUrl = setting.AppUrl
 
@@ -241,6 +242,13 @@ func InstallPost(ctx *middleware.Context, form auth.InstallForm) {
 	cfg.Section("server").Key("HTTP_PORT").SetValue(form.HTTPPort)
 	cfg.Section("server").Key("ROOT_URL").SetValue(form.AppUrl)
 
+	if form.SSHPort == 0 {
+		cfg.Section("server").Key("DISABLE_SSH").SetValue("true")
+	} else {
+		cfg.Section("server").Key("DISABLE_SSH").SetValue("false")
+		cfg.Section("server").Key("SSH_PORT").SetValue(com.ToStr(form.SSHPort))
+	}
+
 	if len(strings.TrimSpace(form.SMTPHost)) > 0 {
 		cfg.Section("mailer").Key("ENABLED").SetValue("true")
 		cfg.Section("mailer").Key("HOST").SetValue(form.SMTPHost)

templates/install.tmpl

@@ -92,6 +92,11 @@
             <input id="domain" name="domain" value="{{.domain}}" required>
             <span class="help">{{.i18n.Tr "install.domain_helper"}}</span>
           </div>
+          <div class="inline required field">
+            <label for="ssh_port">{{.i18n.Tr "install.ssh_port"}}</label>
+            <input id="ssh_port" name="ssh_port" value="{{.ssh_port}}">
+            <span class="help">{{.i18n.Tr "install.ssh_port_helper"}}</span>
+          </div>
           <div class="inline required field">
             <label for="http_port">{{.i18n.Tr "install.http_port"}}</label>
             <input id="http_port" name="http_port" value="{{.http_port}}" required>
@@ -105,6 +110,8 @@
 
           <!-- Optional Settings -->
           <h4 class="ui dividing header">{{.i18n.Tr "install.optional_title"}}</h4>
+
+          <!-- Email -->
           <div class="ui accordion optional field">
             <div class="title {{if .Err_SMTP}}text red{{end}}">
               <i class="icon dropdown"></i>
@@ -143,6 +150,7 @@
             </div>
           </div>
 
+          <!-- Server and other services -->
           <div class="ui accordion optional field">
             <div class="title">
               <i class="icon dropdown"></i>
@@ -170,6 +178,7 @@
             </div>
           </div>
 
+          <!-- Admin -->
           <div class="ui accordion optional field">
             <div class="title {{if .Err_Admin}}text red{{end}}">
               <i class="icon dropdown"></i>